Profile: One of the very best holds relievers in 2011, O'Flaherty became just the third pitcher since 1917 to throw at least 70 innings in a season with a sub-1.00 ERA. A 92.3% strand rate helped him to a 0.98 ERA despite being used almost every other game by Fredi Gonzalez, though his 8.19 strikeout rate and 2.57 walk rate with a 55.5% ground-ball rate certainly helped matters as well. The southpaw improved his strikeout and walk rates by nearly one event per nine innings in 2011, in part by getting batters to swing at his pitches out of the zone roughly 4% of the time more often than in the two previous years. O'Flaherty appeared in the fifth most games (78) of any reliever last year (73.2 IP), so the carryover effect is a concern heading into 2012. Don't expect another sub-1.00 ERA, but he has the tools to be a valuable holds guy for Atlanta again next season. (Mike Axisa)

The Quick Opinion: Don't expect another sub-1.00 ERA again, but Flaherty gets strikeouts, limits walks, and keeps the ball on the ground. That's the recipe for a successful reliever, though his high 2011 workload is a concern heading into 2012.

Profile: Eric O'Flaherty has relatively quietly been one of the game's top relievers over the past four seasons. Since being waived by the Mariners and claimed by the Braves in 2009, the lefty has posted a 1.95 ERA and 1.17 WHIP. Those numbers have improved even more when you drop the sample to just the past two seasons, in which he has posted a 1.31 ERA. As he enters his final year of control in Atlanta, O'Flaherty could be seen as a closer candidate in free agency next season. He will be 29-years-old as a free agent, so he could be an interesting player to speculate on in dynasty formats. Even this season, as the Braves have acquired Jordan Walden and already possess one of the game's top lefty relievers in Jonny Venters, O'Flaherty could potentially be moved to a team needing late-inning help. For now, however, he is not too viable of a candidate in standard formats unless you desperately need ERA help and have room for a set-up man with non-spectacular strikeout numbers. (Ben Duronio)

The Quick Opinion: O'Flaherty has seriously reinvigorated his career since being claimed by Atlanta, but he is behind the game's top closer and may not even be second in line for saves for the Braves. He has a great ground-ball rate and solid control, but pitching in arguably the game's top bullpen does not help his fantasy value.

Profile: After coming back from Tommy John surgery, Eric O'Flaherty managed just 20 innings pitched last season. The good news is that TJS isn't an automatic career ender, but serious questions still loom about his ability to remain an effect reliever. O'Flaherty surrendered just four walks in his microscopic sample size last season, however he did hit two batters. Owner of a career 3.05 walks per nine, he hasn't allowed more than three walks per nine on average since 2010, totaling 169 innings of strong control. While he is a lefty, O'Flaherty's fastball velocity has been dipping for four straight years. Again sample size is important to remember, but last season saw his heater average less than 90 mph. With Sean Doolittle firmly entrenched as the Oakland A's closer, expect O'Flaherty to be the go-to left-handed option in the bullpen for late inning matchups. Fernando Abad is another southpaw in the bullpen, however O'Flaherty owns a lower weighted offense against for both left-handed hitters and righties than Abad. In his peak, O'Flaherty gathered 60 holds between 2011 and 2012. He could be a source of very cheap holds and, as with any reliever, the occasional vulture win. (David Wiers)

The Quick Opinion: Count on O'Flaherty being tabbed as the top left-handed option in the A's bullpen, other than the closer Doolittle. If he settles into a similar role as one he played in Atlanta, 20+ holds with solid ratios is attainable.